Merge 48035d6a92 into eb24cff886

.editorconfig

@@ -11,5 +11,5 @@ insert_final_newline = true
 [*.md]
 indent_size = 2
 
-[tests/views/*.php]
+[tests/views/**/*]
 insert_final_newline = false

composer.json

@@ -7,7 +7,7 @@
         {
             "name": "Mike Cao",
             "email": "mike@mikecao.com",
-            "homepage": "http://www.mikecao.com/",
+            "homepage": "https://mikecao.com",
             "role": "Original Developer"
         },
         {

flight/template/Component.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace flight\template;
+
+abstract class Component
+{
+    abstract public function html(): string;
+
+    public function css(): string
+    {
+        return '';
+    }
+
+    public function js(): string
+    {
+        return '';
+    }
+}

flight/template/View.php

@@ -4,47 +4,59 @@ declare(strict_types=1);
 
 namespace flight\template;
 
+use Closure;
+use Exception;
+use ReflectionFunction;
+
 /**
  * The View class represents output to be displayed. It provides
  * methods for managing view data and inserts the data into
  * view templates upon rendering.
  *
- * @license MIT, http://flightphp.com/license
+ * @license [MIT](https://docs.flightphp.com/license)
- * @copyright Copyright (c) 2011, Mike Cao <mike@mikecao.com>
+ * @copyright 2011 [Mike Cao](https://mikecao.com)
  */
 class View
 {
-    /** Location of view templates. */
+    /** Location of view templates */
     public string $path;
 
-    /** File extension. */
+    /** File extension */
     public string $extension = '.php';
 
     public bool $preserveVars = true;
 
-    /**
+    /** @var array<string, mixed> View variables */
-     * View variables.
-     *
-     * @var array<string, mixed> $vars
-     */
     protected array $vars = [];
 
-    /** Template file. */
+    private string $componentPrefix;
-    private string $template;
+    private string $componentsPath;
+    private int $fetchDepth = 0;
+    /** @var array<string, bool> */
+    private array $styles = [];
+    /** @var array<string, bool> */
+    private array $scripts = [];
 
     /**
-     * Constructor.
-     *
      * @param string $path Path to templates directory
+     * @param string $componentPrefix Prefix for component tags.
+     * For example, if the prefix is `f`, then a component tag would look like `<f-component-name />`
+     * @param string $componentsPath Path to components directory.
+     * If is a relative path, it will be relative to the `$path` property.
+     * **We recomment that you always use absolute paths for explicitness**.
      */
-    public function __construct(string $path = '.')
+    public function __construct(
-    {
+        string $path = ".",
+        string $componentPrefix = 'f',
+        string $componentsPath = 'components'
+    ) {
         $this->path = $path;
+        $this->componentPrefix = $componentPrefix;
+        $this->componentsPath = $componentsPath;
     }
 
     /**
-     * Gets a template variable.
+     * Gets a template variable
-     *
      * @return mixed Variable value or `null` if doesn't exists
      */
     public function get(string $key)
@@ -53,16 +65,14 @@ class View
     }
 
     /**
-     * Sets a template variable.
+     * Sets a template variable
-     *
+     * @param string|array<string, mixed> $key
-     * @param string|iterable<string, mixed> $key
      * @param mixed $value Value
-     *
+     * @return $this
-     * @return self
      */
-    public function set($key, $value = null): self
+    public function set($key, $value = null)
     {
-        if (\is_iterable($key)) {
+        if (is_array($key)) {
             foreach ($key as $k => $v) {
                 $this->vars[$k] = $v;
             }
@@ -74,9 +84,8 @@ class View
     }
 
     /**
-     * Checks if a template variable is set.
+     * Checks if a template variable is set
-     *
+     * @return bool If key exists and is not `null`
-     * @return bool If key exists
      */
     public function has(string $key): bool
     {
@@ -84,11 +93,10 @@ class View
     }
 
     /**
-     * Unsets a template variable. If no key is passed in, clear all variables.
+     * Unsets a template variable. If no key is passed in, clear all variables
-     *
      * @return $this
      */
-    public function clear(?string $key = null): self
+    public function clear(?string $key = null)
     {
         if ($key === null) {
             $this->vars = [];
@@ -100,104 +108,242 @@ class View
     }
 
     /**
-     * Renders a template.
+     * Renders a template
-     *
      * @param string $file Template file
      * @param ?array<string, mixed> $templateData Template data
-     *
+     * @throws Exception If template not found
-     * @throws \Exception If template not found
      */
     public function render(string $file, ?array $templateData = null): void
     {
-        $this->template = $this->getTemplate($file);
+        echo $this->fetch($file, $templateData);
-
-        if (!\file_exists($this->template)) {
-            $normalized_path = self::normalizePath($this->template);
-            throw new \Exception("Template file not found: {$normalized_path}.");
-        }
-
-        \extract($this->vars);
-
-        if (\is_array($templateData) === true) {
-            \extract($templateData);
-
-            if ($this->preserveVars === true) {
-                $this->vars = \array_merge($this->vars, $templateData);
-            }
-        }
-
-        include $this->template;
     }
 
     /**
-     * Gets the output of a template.
+     * Gets the output of a template
-     *
      * @param string $file Template file
      * @param ?array<string, mixed> $data Template data
-     *
      * @return string Output of template
      */
     public function fetch(string $file, ?array $data = null): string
     {
-        \ob_start();
+        if ($this->fetchDepth === 0) {
+            $this->styles = [];
+            $this->scripts = [];
+        }
+
+        $this->fetchDepth++;
+
+        try {
+            $template = $this->getTemplate($file);
+
+            if (!$this->exists($file)) {
+                throw new Exception("Template file not found: $template.");
+            }
+
+            extract($this->vars);
+
+            if (is_array($data)) {
+                extract($data);
+
+                if ($this->preserveVars) {
+                    $this->vars += $data;
+                }
+            }
+
+            ob_start();
+            $component = include $template;
+
+            switch (true) {
+                case is_callable($component):
+                    $arguments = $this->getCallableArguments($component, $data);
+                    $view = $component(...$arguments);
+                    ob_end_clean();
+
+                    break;
+                case $component instanceof Component:
+                    $view = $component->html();
+                    $css = $component->css();
+                    $js = $component->js();
+
+                    if ($css && !array_key_exists($template, $this->styles)) {
+                        $view .= $this->renderComponentStyle($css);
+
+                        $this->styles[$template] = true;
+                    }
+
+                    if ($js && !array_key_exists($template, $this->scripts)) {
+                        $view .= $this->renderComponentScript($js);
+
+                        $this->scripts[$template] = true;
+                    }
+
+                    ob_end_clean();
+
+                    break;
+                default:
+                    $view = ob_get_clean();
+            }
+
+            preg_match_all(
+                "/<$this->componentPrefix-(?<component>[a-z-]+)\s*(?<props>([a-z]+=\"[^\"]+\"\s*)*)?\s*\/>/",
+                $view,
+                $tagsMatches,
+            );
+
+            $tagsMatches = array_filter($tagsMatches);
 
-        $this->render($file, $data);
+            foreach ($tagsMatches[0] ?? [] as $tagIndex => $match) {
+                $tag = $match;
+                $component = $tagsMatches['component'][$tagIndex];
+                $props = $tagsMatches['props'][$tagIndex] ?? '';
 
-        return \ob_get_clean();
+                preg_match_all(
+                    '/(?<name>[a-z]+)="(?<value>[^"]+)"/',
+                    $props,
+                    $propsMatches,
+                );
+
+                $propsMatches = array_filter($propsMatches);
+
+                if ($propsMatches) {
+                    $props = [];
+
+                    foreach (array_keys($propsMatches[0]) as $propIndex) {
+                        $name = $propsMatches['name'][$propIndex];
+                        $value = $propsMatches['value'][$propIndex];
+                        $props[$name] = $value;
+                    }
+                } else {
+                    $props = [];
+                }
+
+                $component = $this->fetch("$this->componentsPath/$component", $props);
+                $tagPosition = strpos($view, $tag);
+
+                if ($tagPosition === false) {
+                    continue;
+                }
+
+                $view = substr_replace($view, $component, $tagPosition, strlen($tag));
+            }
+
+            return $view;
+        } finally {
+            $this->fetchDepth--;
+        }
     }
 
     /**
-     * Checks if a template file exists.
+     * Checks if a template file exists
-     *
      * @param string $file Template file
-     *
      * @return bool Template file exists
      */
     public function exists(string $file): bool
     {
-        return \file_exists($this->getTemplate($file));
+        return file_exists($this->getTemplate($file));
     }
 
     /**
-     * Gets the full path to a template file.
+     * Gets the full path to a template file
-     *
      * @param string $file Template file
-     *
      * @return string Template file location
      */
     public function getTemplate(string $file): string
     {
-        $ext = $this->extension;
+        $fileDoesNotHaveExtension = substr($file, -strlen($this->extension)) !== $this->extension;
 
-        if (!empty($ext) && (\substr($file, -1 * \strlen($ext)) != $ext)) {
+        if ($fileDoesNotHaveExtension) {
-            $file .= $ext;
+            $file .= $this->extension;
         }
 
-        $is_windows = \strtoupper(\substr(PHP_OS, 0, 3)) === 'WIN';
+        $isLinuxAbsolutePath = $file[0] === '/';
+        $isWindowsAbsolutePath = PHP_OS === 'WINNT' && $file[1] === ':';
 
-        if ((\substr($file, 0, 1) === '/') || ($is_windows && \substr($file, 1, 1) === ':')) {
+        if ($isLinuxAbsolutePath || $isWindowsAbsolutePath) {
-            return $file;
+            return $this::normalizePath($file);
         }
 
-        return $this->path . DIRECTORY_SEPARATOR . $file;
+        return $this::normalizePath("$this->path/$file");
     }
 
     /**
-     * Displays escaped output.
+     * Displays escaped output
-     *
      * @param string $str String to escape
-     *
      * @return string Escaped string
      */
     public function e(string $str): string
     {
-        $value = \htmlentities($str);
+        $value = htmlentities($str);
         echo $value;
+
         return $value;
     }
 
-    protected static function normalizePath(string $path, string $separator = DIRECTORY_SEPARATOR): string
+    protected static function normalizePath(
+        string $path,
+        string $separator = DIRECTORY_SEPARATOR
+    ): string {
+        return str_replace(['\\', '/'], $separator, $path);
+    }
+
+    /**
+     * @param callable $component
+     * @param ?array<string, mixed> $data
+     * @return array<int, mixed>
+     */
+    private function getCallableArguments(callable $component, ?array $data): array
+    {
+        if (!is_array($data) || !$data) {
+            return [];
+        }
+
+        $arguments = [];
+        $remainingData = $data;
+        $reflection = new ReflectionFunction(Closure::fromCallable($component));
+
+        foreach ($reflection->getParameters() as $parameter) {
+            if ($parameter->isVariadic()) {
+                foreach ($remainingData as $value) {
+                    $arguments[] = $value;
+                }
+
+                break;
+            }
+
+            $name = $parameter->getName();
+
+            if (array_key_exists($name, $remainingData)) {
+                $arguments[] = $remainingData[$name];
+                unset($remainingData[$name]);
+            }
+        }
+
+        return $arguments;
+    }
+
+    private function renderComponentStyle(string $css): string
+    {
+        if (preg_match('/^\s*<style\b[^>]*>.*<\/style>\s*$/is', $css) === 1) {
+            return $css;
+        }
+
+        return <<<html
+        <style>
+            $css
+        </style>
+        html;
+    }
+
+    private function renderComponentScript(string $js): string
     {
-        return \str_replace(['\\', '/'], $separator, $path);
+        if (preg_match('/^\s*<script\b[^>]*>.*<\/script>\s*$/is', $js) === 1) {
+            return $js;
+        }
+
+        return <<<html
+        <script>
+            $js
+        </script>
+        html;
     }
 }

tests/ViewTest.php

@@ -14,101 +14,83 @@ class ViewTest extends TestCase
 
     protected function setUp(): void
     {
-        $this->view = new View();
+        $this->view = new View(__DIR__ . '/views');
-        $this->view->path = __DIR__ . '/views';
     }
 
-    // Set template variables
     public function testVariables(): void
     {
         $this->view->set('test', 123);
 
-        $this->assertEquals(123, $this->view->get('test'));
+        self::assertSame(123, $this->view->get('test'));
-
+        self::assertTrue($this->view->has('test'));
-        $this->assertTrue($this->view->has('test'));
+        self::assertFalse($this->view->has('unknown'));
-        $this->assertTrue(!$this->view->has('unknown'));
 
         $this->view->clear('test');
 
-        $this->assertNull($this->view->get('test'));
+        self::assertNull($this->view->get('test'));
     }
 
     public function testMultipleVariables(): void
     {
-        $this->view->set([
+        $this->view->set(['test' => 123, 'foo' => 'bar']);
-            'test' => 123,
-            'foo' => 'bar'
-        ]);
 
-        $this->assertEquals(123, $this->view->get('test'));
+        self::assertSame(123, $this->view->get('test'));
-        $this->assertEquals('bar', $this->view->get('foo'));
+        self::assertSame('bar', $this->view->get('foo'));
 
         $this->view->clear();
 
-        $this->assertNull($this->view->get('test'));
+        self::assertNull($this->view->get('test'));
-        $this->assertNull($this->view->get('foo'));
+        self::assertNull($this->view->get('foo'));
     }
 
-    // Check if template files exist
     public function testTemplateExists(): void
     {
-        $this->assertTrue($this->view->exists('hello.php'));
+        self::assertTrue($this->view->exists('hello.php'));
-        $this->assertTrue(!$this->view->exists('unknown.php'));
+        self::assertFalse($this->view->exists('unknown.php'));
     }
 
-    // Render a template
     public function testRender(): void
     {
         $this->view->render('hello', ['name' => 'Bob']);
 
-        $this->expectOutputString('Hello, Bob!');
+        self::expectOutputString('Hello, Bob!');
     }
 
     public function testRenderBadFilePath(): void
     {
-        $this->expectException(Exception::class);
         $exception_message = sprintf(
             'Template file not found: %s%sviews%sbadfile.php',
             __DIR__,
             DIRECTORY_SEPARATOR,
-            DIRECTORY_SEPARATOR
+            DIRECTORY_SEPARATOR,
         );
-        $this->expectExceptionMessage($exception_message);
+
+        self::expectException(Exception::class);
+        self::expectExceptionMessage($exception_message);
 
         $this->view->render('badfile');
     }
 
-    // Fetch template output
     public function testFetch(): void
     {
         $output = $this->view->fetch('hello', ['name' => 'Bob']);
 
-        $this->assertEquals('Hello, Bob!', $output);
+        self::assertSame('Hello, Bob!', $output);
     }
 
-    // Default extension
     public function testTemplateWithExtension(): void
     {
-        $this->view->set('name', 'Bob');
+        $this->view->render('hello.php', ['name' => 'Bob']);
 
-        $this->view->render('hello.php');
+        self::expectOutputString('Hello, Bob!');
-
-        $this->expectOutputString('Hello, Bob!');
     }
 
-    // Custom extension
     public function testTemplateWithCustomExtension(): void
     {
-        $this->view->set('name', 'Bob');
+        self::expectOutputString('Hello world, Bob!');
-        $this->view->extension = '.html';
-
-        ob_start();
-        $this->view->render('world');
-        $html = ob_get_clean();
-        $html = str_replace(["\r\n", "\n"], '', $html);
-        echo $html;
 
-        $this->expectOutputString("Hello world, Bob!");
+        $this->view->extension = '.html';
+        $this->view->render('world', ['name' => 'Bob']);
     }
 
     public function testGetTemplateAbsolutePath(): void
@@ -116,48 +98,64 @@ class ViewTest extends TestCase
         $tmpfile = tmpfile();
         $this->view->extension = '';
         $file_path = stream_get_meta_data($tmpfile)['uri'];
-        $this->assertEquals($file_path, $this->view->getTemplate($file_path));
+
+        self::assertSame($file_path, $this->view->getTemplate($file_path));
     }
 
     public function testE(): void
     {
-        $this->expectOutputString('<script>');
+        $expectedString = '<script>';
+
+        self::expectOutputString($expectedString);
+
         $result = $this->view->e('<script>');
-        $this->assertEquals('&lt;script&gt;', $result);
+
+        self::assertSame($expectedString, $result);
     }
 
     public function testeNoNeedToEscape(): void
     {
-        $this->expectOutputString('script');
+        $expectedString = 'script';
-        $result = $this->view->e('script');
+
-        $this->assertEquals('script', $result);
+        self::expectOutputString($expectedString);
+
+        $result = $this->view->e($expectedString);
+
+        self::assertSame($expectedString, $result);
     }
 
     public function testNormalizePath(): void
     {
         $viewMock = new class extends View
         {
-            public static function normalizePath(string $path, string $separator = DIRECTORY_SEPARATOR): string
+            public static function normalizePath(
-            {
+                string $path,
+                string $separator = DIRECTORY_SEPARATOR
+            ): string {
                 return parent::normalizePath($path, $separator);
             }
         };
 
-        $this->assertSame(
+        self::assertSame(
             'C:/xampp/htdocs/libs/Flight/core/index.php',
             $viewMock::normalizePath('C:\xampp\htdocs\libs\Flight/core/index.php', '/')
         );
-        $this->assertSame(
+
+        self::assertSame(
             'C:\xampp\htdocs\libs\Flight\core\index.php',
             $viewMock::normalizePath('C:/xampp/htdocs/libs/Flight\core\index.php', '\\')
         );
-        $this->assertSame(
+
+        self::assertSame(
             'C:°xampp°htdocs°libs°Flight°core°index.php',
             $viewMock::normalizePath('C:/xampp/htdocs/libs/Flight\core\index.php', '°')
         );
     }
 
-    /** @dataProvider renderDataProvider */
+    /**
+     * @dataProvider renderDataProvider
+     * @param array{string, array<string, mixed>} $renderParams
+     */
     public function testDoesNotPreserveVarsWhenFlagIsDisabled(
         string $output,
         array $renderParams,
@@ -165,11 +163,11 @@ class ViewTest extends TestCase
     ): void {
         $this->view->preserveVars = false;
 
-        $this->expectOutputString($output);
+        self::expectOutputString($output);
         $this->view->render(...$renderParams);
 
-        set_error_handler(function (int $code, string $message) use ($regexp): void {
+        set_error_handler(static function (int $code, string $message) use ($regexp): void {
-            $this->assertMatchesRegularExpression($regexp, $message);
+            self::assertMatchesRegularExpression($regexp, $message);
         });
 
         $this->view->render($renderParams[0]);
@@ -179,17 +177,14 @@ class ViewTest extends TestCase
 
     public function testKeepThePreviousStateOfOneViewComponentByDefault(): void
     {
-        $html = <<<'html'
+        $html = self::removeLineEndings(<<<'html'
         <div>Hi</div>
         <div>Hi</div>
         <input type="number" />
         <input type="number" />
-        html; // phpcs:ignore
+        html);
-
-        // if windows replace \n with \r\n
-        $html = str_replace(["\n", "\r"], '', $html);
 
-        $this->expectOutputString($html);
+        self::expectOutputString($html);
 
         $this->view->render('myComponent', ['prop' => 'Hi']);
         $this->view->render('myComponent');
@@ -200,17 +195,14 @@ class ViewTest extends TestCase
     public function testKeepThePreviousStateOfDataSettedBySetMethod(): void
     {
         $this->view->preserveVars = false;
-
         $this->view->set('prop', 'bar');
 
-        $html = <<<'html'
+        $html = self::removeLineEndings(<<<'html'
         <div>qux</div>
         <div>bar</div>
-        html; // phpcs:ignore
+        html);
 
-        $html = str_replace(["\n", "\r"], '', $html);
+        self::expectOutputString($html);
-
-        $this->expectOutputString($html);
 
         $this->view->render('myComponent', ['prop' => 'qux']);
         $this->view->render('myComponent');
@@ -218,18 +210,15 @@ class ViewTest extends TestCase
 
     public static function renderDataProvider(): array
     {
-        $html1 = <<<'html'
+        $html1 = self::removeLineEndings(<<<'html'
         <div>Hi</div>
         <div></div>
-        html; // phpcs:ignore
+        html);
 
-        $html2 = <<<'html'
+        $html2 = self::removeLineEndings(<<<'html'
         <input type="number" />
         <input type="text" />
-        html; // phpcs:ignore
+        html);
-
-        $html1 = str_replace(["\n", "\r"], '', $html1);
-        $html2 = str_replace(["\n", "\r"], '', $html2);
 
         return [
             [
@@ -244,4 +233,250 @@ class ViewTest extends TestCase
             ],
         ];
     }
+
+    /** @dataProvider pagesDataProvider */
+    public function testItRendersComponent(
+        string $page,
+        string $expected,
+        array $props = []
+    ): void {
+        $view = new View(__DIR__ . '/views');
+        $view->preserveVars = false;
+        $actual = $view->fetch("pages/$page", $props);
+
+        self::assertSame(
+            self::removeIndentation(self::removeLineEndings($expected)),
+            self::removeIndentation(self::removeLineEndings($actual)),
+        );
+    }
+
+    public function testItRendersComponentFromAnotherPath(): void
+    {
+        $view = new View(__DIR__ . '/views', 'f', __DIR__ . '/components');
+        $view->preserveVars = false;
+        $actual = $view->fetch('pages/page-with-component-from-another-path');
+        $expected = 'my-component-from-another-path';
+
+        self::assertSame(
+            self::removeIndentation(self::removeLineEndings($expected)),
+            self::removeIndentation(self::removeLineEndings($actual)),
+        );
+    }
+
+    public static function pagesDataProvider(): array
+    {
+        return [
+            [
+                'page-with-component-with-old-syntax',
+                <<<'html'
+                my-component
+                html,
+            ],
+            [
+                'page-with-component-with-new-syntax',
+                <<<'html'
+                my-component
+                html,
+            ],
+            [
+                'page-with-component-with-subcomponent',
+                <<<'html'
+                <div>
+                    my-component-with-subcomponent
+                    subcomponent
+                </div>
+                html,
+            ],
+            [
+                'page-with-multiple-components',
+                <<<'html'
+                <ul>
+                    <li>my-component</li>
+                    <li>my-component</li>
+                </ul>
+                html,
+            ],
+            [
+                'page-with-functional-component',
+                <<<'html'
+                my-functional-component
+                html,
+            ],
+            [
+                'page-with-class-component',
+                <<<'html'
+                my-class-component
+                html,
+            ],
+            [
+                'page-with-functional-component-with-props',
+                <<<'html'
+                functional-component-with-props: Astronaut Victoria
+                html,
+                ['name' => 'Victoria', 'occupation' => 'Astronaut'],
+            ],
+            [
+                'page-with-functional-component-with-individual-props',
+                <<<'html'
+                functional-component-with-individual-props: Astronaut Victoria
+                html,
+                ['name' => 'Victoria', 'occupation' => 'Astronaut'],
+            ],
+            [
+                'page-with-class-component-with-props',
+                <<<'html'
+                class-component-with-props: Astronaut Victoria
+                html,
+                ['name' => 'Victoria', 'occupation' => 'Astronaut'],
+            ],
+            [
+                'page-with-class-component-with-styles',
+                <<<'html'
+                <span class="my-class-component-with-styles">
+                    my-class-component-with-styles
+                </span>
+
+                <style>
+                    .my-class-component-with-styles {
+                        color: red;
+                    }
+                </style>
+                html,
+            ],
+            [
+                'page-with-class-component-with-custom-style-tag',
+                <<<'html'
+                <span class="my-class-component-with-custom-style-tag">
+                    my-class-component-with-custom-style-tag
+                </span>
+                <style media="print" data-component="my-class-component-with-custom-style-tag">
+                    .my-class-component-with-custom-style-tag {
+                        color: purple;
+                    }
+                </style>
+                html,
+            ],
+            [
+                'page-with-class-component-with-scripts',
+                <<<'html'
+                my-class-component-with-scripts
+
+                <script>console.log('my-class-component-with-scripts')</script>
+                html,
+            ],
+            [
+                'page-with-class-component-with-custom-script-tag',
+                <<<'html'
+                my-class-component-with-custom-script-tag
+                <script type="module" data-component="my-class-component-with-custom-script-tag">
+                    console.log('my-class-component-with-custom-script-tag')
+                </script>
+                html,
+            ],
+            [
+                'page-with-class-component-that-extends-another-class-component',
+                <<<'html'
+                another-class-component extended by my-class-component-that-extends-another-class-component
+                html,
+            ],
+            [
+                'page-with-component-with-one-prop',
+                <<<'html'
+                <html>
+                    <body>
+                        <h1>Hello, James</h1>
+                    </body>
+                </html>
+                html,
+                ['name' => 'James'],
+            ],
+            [
+                'page-with-component-with-one-prop',
+                <<<'html'
+                <html>
+                    <body>
+                        <h1>Hello, Victoria</h1>
+                    </body>
+                </html>
+                html,
+                ['name' => 'Victoria'],
+            ],
+            [
+                'page-with-component-with-two-props',
+                <<<'html'
+                <html>
+                    <body>
+                        <h1>Hello, Astronaut Victoria</h1>
+                    </body>
+                </html>
+                html,
+                ['name' => 'Victoria', 'occupation' => 'Astronaut'],
+            ],
+            [
+                'page-with-three-different-components',
+                <<<'html'
+                my-component
+                my-functional-component
+                my-class-component
+                html,
+            ],
+            [
+                'page-with-component-with-prop-which-value-contains-spaces-and-numbers',
+                <<<'html'
+                <h1>Hello, Constantine 1st the Great</h1>
+                html,
+                ['name' => 'Constantine 1st the Great'],
+            ],
+            [
+                'page-two-same-components-with-one-style-and-script-tag',
+                <<<'html'
+                <span class="my-class-component-with-styles">
+                    my-class-component-with-styles
+                </span>
+                <style>
+                    .my-class-component-with-styles {
+                        color: red;
+                    }
+                </style>
+                <span class="my-class-component-with-styles">
+                    my-class-component-with-styles
+                </span>
+                my-class-component-with-scripts
+                <script>console.log('my-class-component-with-scripts')</script>
+                my-class-component-with-scripts
+            html,
+            ],
+        ];
+    }
+
+    /** @dataProvider prefixesDataProvider */
+    public function testRenderComponentsWithDifferentPrefixes(string $prefix): void
+    {
+        $view = new View(__DIR__ . '/views', $prefix);
+        $view->preserveVars = false;
+        $actual = $view->fetch('pages/page-with-component-with-custom-prefix', compact('prefix'));
+        $expected = 'my-component';
+
+        self::assertSame(
+            self::removeIndentation(self::removeLineEndings($expected)),
+            self::removeIndentation(self::removeLineEndings($actual)),
+        );
+    }
+
+    public static function prefixesDataProvider(): array
+    {
+        return [
+            ['x'],
+        ];
+    }
+
+    private static function removeLineEndings(string $subject): string
+    {
+        return str_replace(["\r", "\n"], '', $subject);
+    }
+
+    private static function removeIndentation(string $subject): string
+    {
+        return preg_replace('/\s{2,}/', '', $subject);
+    }
 }

tests/components/my-component-from-another-path.php

@@ -0,0 +1 @@
+my-component-from-another-path

tests/views/components/another-class-component.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace tests\views\components;
+
+use flight\template\Component;
+use Override;
+
+if (!class_exists('AnotherClassComponent')) {
+    class AnotherClassComponent extends Component
+    {
+        #[Override]
+        public function html(): string
+        {
+            return 'another-class-component';
+        }
+    }
+}

tests/views/components/greeting-with-two-props.php

@@ -0,0 +1 @@
+<h1>Hello, <?= $occupation ?> <?= $name ?></h1>

tests/views/components/greeting.php

@@ -0,0 +1 @@
+<h1>Hello, <?= $name ?></h1>

tests/views/components/my-class-component-that-extends-another-class-component.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+use tests\views\components\AnotherClassComponent;
+
+require_once __DIR__ . '/another-class-component.php';
+
+return new class extends AnotherClassComponent
+{
+    #[Override]
+    public function html(): string
+    {
+        return parent::html() . ' extended by my-class-component-that-extends-another-class-component';
+    }
+};

tests/views/components/my-class-component-with-custom-script-tag.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+use flight\template\Component;
+
+return new class extends Component
+{
+    public function html(): string
+    {
+        return 'my-class-component-with-custom-script-tag';
+    }
+
+    public function js(): string
+    {
+        return <<<'js'
+        <script type="module" data-component="my-class-component-with-custom-script-tag">
+            console.log('my-class-component-with-custom-script-tag')
+        </script>
+        js;
+    }
+};

tests/views/components/my-class-component-with-custom-style-tag.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+use flight\template\Component;
+
+return new class extends Component
+{
+    public function html(): string
+    {
+        return <<<'html'
+        <span class="my-class-component-with-custom-style-tag">
+            my-class-component-with-custom-style-tag
+        </span>
+        html;
+    }
+
+    public function css(): string
+    {
+        return <<<'css'
+        <style media="print" data-component="my-class-component-with-custom-style-tag">
+            .my-class-component-with-custom-style-tag {
+                color: purple;
+            }
+        </style>
+        css;
+    }
+};

tests/views/components/my-class-component-with-props.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+use flight\template\Component;
+
+return new class($name, $occupation) extends Component
+{
+    private string $name;
+    private string $occupation;
+
+    public function __construct(string $name, string $occupation)
+    {
+        $this->name = $name;
+        $this->occupation = $occupation;
+    }
+
+    public function html(): string
+    {
+        return "class-component-with-props: $this->occupation $this->name";
+    }
+};

tests/views/components/my-class-component-with-scripts.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+use flight\template\Component;
+
+return new class extends Component
+{
+    #[Override]
+    public function html(): string
+    {
+        return 'my-class-component-with-scripts';
+    }
+
+    #[Override]
+    public function js(): string
+    {
+        return <<<'js'
+        console.log('my-class-component-with-scripts')
+        js;
+    }
+};

tests/views/components/my-class-component-with-styles.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+use flight\template\Component;
+
+return new class extends Component
+{
+    #[Override]
+    public function html(): string
+    {
+        return <<<'html'
+        <span class="my-class-component-with-styles">
+            my-class-component-with-styles
+        </span>
+        html;
+    }
+
+    #[Override]
+    public function css(): string
+    {
+        return <<<'css'
+        .my-class-component-with-styles {
+            color: red;
+        }
+        css;
+    }
+};

tests/views/components/my-class-component.php

@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+use flight\template\Component;
+
+return new class extends Component
+{
+    #[Override]
+    public function html(): string
+    {
+        return 'my-class-component';
+    }
+};

tests/views/components/my-component-with-subcomponent.php

@@ -0,0 +1,4 @@
+<div>
+    my-component-with-subcomponent
+    <f-subcomponent />
+</div>

tests/views/components/my-component.php

@@ -0,0 +1 @@
+my-component

tests/views/components/my-functional-component-with-individual-props.php

@@ -0,0 +1,6 @@
+<?php
+
+declare(strict_types=1);
+
+return fn (string $name, string $occupation): string =>
+    "functional-component-with-individual-props: $occupation $name";

tests/views/components/my-functional-component-with-props.php

@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+return fn (...$props): string => sprintf(
+    'functional-component-with-props: %s %s',
+    $props[1] ?? '',
+    $props[0] ?? ''
+);

tests/views/components/my-functional-component.php

@@ -0,0 +1,5 @@
+<?php
+
+declare(strict_types=1);
+
+return fn (): string => 'my-functional-component';

tests/views/components/subcomponent.php

@@ -0,0 +1 @@
+subcomponent

tests/views/hello.php

@@ -1 +1 @@
-Hello, <?php echo $name; ?>!
+Hello, <?= $name ?>!

tests/views/pages/page-two-same-components-with-one-style-and-script-tag.php

@@ -0,0 +1,5 @@
+<f-my-class-component-with-styles />
+<f-my-class-component-with-styles />
+
+<f-my-class-component-with-scripts />
+<f-my-class-component-with-scripts />

tests/views/pages/page-with-class-component-that-extends-another-class-component.php

@@ -0,0 +1 @@
+<f-my-class-component-that-extends-another-class-component />

tests/views/pages/page-with-class-component-with-custom-script-tag.php

@@ -0,0 +1 @@
+<f-my-class-component-with-custom-script-tag />

tests/views/pages/page-with-class-component-with-custom-style-tag.php

@@ -0,0 +1 @@
+<f-my-class-component-with-custom-style-tag />

tests/views/pages/page-with-class-component-with-props.php

@@ -0,0 +1 @@
+<f-my-class-component-with-props name="<?= $name ?>" occupation="<?= $occupation ?>" />

tests/views/pages/page-with-class-component-with-scripts.php

@@ -0,0 +1 @@
+<f-my-class-component-with-scripts />

tests/views/pages/page-with-class-component-with-styles.php

@@ -0,0 +1 @@
+<f-my-class-component-with-styles />

tests/views/pages/page-with-class-component.php

@@ -0,0 +1 @@
+<f-my-class-component />

tests/views/pages/page-with-component-from-another-path.php

@@ -0,0 +1 @@
+<f-my-component-from-another-path />

tests/views/pages/page-with-component-with-custom-prefix.php

@@ -0,0 +1 @@
+<<?= $prefix ?>-my-component />

tests/views/pages/page-with-component-with-new-syntax.php

@@ -0,0 +1 @@
+<f-my-component />

tests/views/pages/page-with-component-with-old-syntax.php

@@ -0,0 +1 @@
+<?php $this->render('components/my-component') ?>

tests/views/pages/page-with-component-with-one-prop.php

@@ -0,0 +1,5 @@
+<html>
+    <body>
+        <f-greeting name="<?= $name ?>" />
+    </body>
+</html>

tests/views/pages/page-with-component-with-prop-which-value-contains-spaces-and-numbers.php

@@ -0,0 +1 @@
+<f-greeting name="<?= $name ?>" />

tests/views/pages/page-with-component-with-subcomponent.php

@@ -0,0 +1 @@
+<f-my-component-with-subcomponent />

tests/views/pages/page-with-component-with-two-props.php

@@ -0,0 +1,5 @@
+<html>
+    <body>
+        <f-greeting-with-two-props name="<?= $name ?>" occupation="<?= $occupation ?>" />
+    </body>
+</html>

tests/views/pages/page-with-functional-component-with-individual-props.php

@@ -0,0 +1 @@
+<f-my-functional-component-with-individual-props occupation="<?= $occupation ?>" name="<?= $name ?>" />

tests/views/pages/page-with-functional-component-with-props.php

@@ -0,0 +1 @@
+<f-my-functional-component-with-props name="<?= $name ?>" occupation="<?= $occupation ?>" />

tests/views/pages/page-with-functional-component.php

@@ -0,0 +1 @@
+<f-my-functional-component />

tests/views/pages/page-with-multiple-components.php

@@ -0,0 +1,7 @@
+<ul>
+    <?php for ($i = 1; $i <= 2; ++$i) : ?>
+        <li>
+            <f-my-component />
+        </li>
+    <?php endfor ?>
+</ul>

tests/views/pages/page-with-three-different-components.php

@@ -0,0 +1,3 @@
+<f-my-component />
+<f-my-functional-component />
+<f-my-class-component />

tests/views/world.html

@@ -1 +1 @@
-Hello world, <?php echo $name; ?>!
+Hello world, <?= $name ?>!